Infrastructure and Readiness - the Future of Networks - Improved Flexibility & Economics by Transitioning from Satellite to Submarine Wayne Walters Director Market Development ECI Telecom Steve Battick Head of Carrier Services Digicel

2 Guadeloupe Dominica Martinique St. Lucia St. Vincent Barbados Grenada Trinidad Miami Satellite Network Hub & spoke topology E1 links to Miami Independent of incumbent Makes sense for emerging carrier

3 Intra-Island Traffic Intra-Island Inter-Island Rest of World No satellite capacity required

4 Rest of the World Traffic Intra-Island Inter-Island Rest of World Satellite link to tandem switch point

5 Island to Island Traffic Intra-Island Inter-Island Rest of World Consumes twice satellite capacity

6 Guadeloupe Dominica Martinique St. Lucia St. Vincent Barbados Grenada Trinidad Miami Network Expansion Increased satellite capacity Expensive Add SDH radio link Leverage satellite infrastructure Lower cost alternative to satellite Increases burden on satellite link for rest of world traffic Add leased E1s via submarine Expensive Relieves some island to island traffic issues Increases burden on satellite link for rest of world traffic

7 Problem Statement Satellite network Very practical for initial infrastructure requirements Add on leased E1s & SDH radio Manage several transport networks But with success Voice traffic growth More island to island traffic More rest of world traffic Data service offerings Higher bandwidth requirements but bursty Network is expensive to expand & maintain

8 Guadeloupe Dominica Martinique St. Lucia St. Vincent Barbados Grenada Trinidad New York Miami Submarine Cable Network Linear network Flexible connectivity Reuse of bandwidth Indefeasible Rights of Use (IRUs) Lease costs  Capital investment Increased capacity STM4 capacity (252 E1s) Versus N x E1s Increased flexibility MSPP provides E1 grooming Improved data support Dual hubs Miami & New York Improved reliability

9 Linear Network Configuration Star (Hubbing) bandwidth configuration Flexibility in quickly assigning bandwidth per link Mesh bandwidth configuration Allows reuse of capacity

10 Flexible Submarine Network Submarine cable operator provides STM1 grooming Addition of MSPP allows STM1, VC4, & VC12 grooming Dynamic control of bandwidth via MSPP Shift bandwidth with traffic demands STM4 STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 Cable Landing Cable Landing Cable Landing Cable Landing Cable Landing

11 Configured for Star Connectivity STM4 STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 Cable Landing Cable Landing Cable Landing Cable Landing Cable Landing

12 Configured for Mesh Connectivity STM4 STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 Cable Landing Cable Landing Cable Landing Cable Landing Cable Landing

13 Adjust Connectivity Bandwidth STM4 STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 MSPP VC12 DCX E1, DS3, STM1 Cable Landing Cable Landing Cable Landing Cable Landing Cable Landing

14 Improved Data Transport Ethernet over SDH – GFP, VCAT, LCAS Transport rate limited Ethernet Provides feedback on buffering Use to interconnect routers / switches Enables data aggregation Enables local switching STM4 STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 MSPP VC12 DCX EoS MSPP VC12 DCX EoS MSPP VC12 DCX EoS MSPP VC12 DCX EoS MSPP VC12 DCX EoS Cable Landing Cable Landing Cable Landing Cable Landing Cable Landing 10/100/1G

15 Integrated Data Aggregation STM4 STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM1 DCX STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 STM4 1+1 MSPP VC12 DCX Layer 2 MSPP VC12 DCX Layer 2 MSPP VC12 DCX Layer 2 MSPP VC12 DCX Layer 2 MSPP VC12 DCX Layer 2 Cable Landing Cable Landing Cable Landing Cable Landing Cable Landing 10/100/1G Integrated Layer 2 switching MEF based services: E-Line, E-LAN, E-Tree QoS  guaranteed delivery, best effort, latency, etc. Provides data aggregation Provides local switching

16 Summary Submarine cable based foundation Leveraging IRUs on submarine systems Shift leasing costs to capital costs Connectivity agility with MSPP Flexible management of bandwidth Able to shift bandwidth to traffic needs Improved data transport Integrated Layer 2 switching Data aggregation & switching Positive ROI in just a few years

17 Guadeloupe Dominica Martinique St. Lucia St. Vincent Barbados Grenada Trinidad New York Miami Expanding with More to Come Jamaica

Infrastructure and Readiness - the Future of Networks - Thank You Wayne Walters